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HashMap
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<H2>Class HashMap</H2>
<PRE>Object
   |
   +--<a href='../lang/JObject.html'>js.lang.JObject</a>
         |
         +--<a href='../lang/Cloneable.html'>js.lang.Cloneable</a>
               |
               +--<b>js.util.HashMap</b>
</PRE>


<HR>
<DL>
   <!-- Class definition -->
   <DT>class 
   <B>HashMap</B>
   
      <DT>extends <a href='../lang/Cloneable.html'>js.lang.Cloneable</a> 
   

</DL>
   
   <P>
   <BR/>This is the map class.
 <BR/><B>Version: </B>2.01, 10/23/05  <BR/><BR/><B>Author:</B> Wan Changhua  <BR/><I>Defined in <a href='overview-summary-HashMap.jsc.html'>HashMap.jsc</a></I><BR/><BR/>
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   <TD>
      <CODE>
	 <B>
	    <A HREF="HashMap.html#HashMap()">js.util.HashMap</a> 
	 </B>
	 ()
      </CODE>
      <BR>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
      Create a new HashMap instance.
      </TD>
</TR>
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&nbsp;

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   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;void</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#clear">clear</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Removes all mappings from this map.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;<a href="HashMap.html">js.util.HashMap</a></CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#clone">clone</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns a shallow copy of this <tt>HashMap</tt> instance: the keys and
 values themselves are not cloned.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;boolean</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#containsKey">containsKey</A></B>(key)
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns <tt>true</tt> if this map contains a mapping for the
 specified key.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;boolean</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#containsValue">containsValue</A></B>(value)
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns <tt>true</tt> if this map maps one or more keys to the
 specified value.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;<a href="Iterator.html">js.util.Iterator</a></CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#elements">elements</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns an iterator of the values in this hashmap.
      </TD>
   </TR>

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      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;Object</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#get">get</A></B>(key)
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns the value to which the specified key is mapped in this idEntry
 hash map, or <tt>null</tt> if the map contains no mapping for this key.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;boolean</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#isEmpty">isEmpty</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns <tt>true</tt> if this map contains no key-value mappings.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;js.util.Iterator</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#keys">keys</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns an iterator of the keys in this hashmap.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;Object</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#put">put</A></B>(key, value)
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Associates the specified value with the specified key in this map.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;Object</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#remove">remove</A></B>(key)
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Removes the mapping for this key from this map if present.
      </TD>
   </TR>

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      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;int</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#size">size</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns the number of key-value mappings in this map.
      </TD>
   </TR>

   <TR BGCOLOR="white" CLASS="TableRowColor">
      <TD ALIGN="right" VALIGN="top" WIDTH="1%">
	 <FONT SIZE="-1">
	    <CODE>&nbsp;Array</CODE>
	 </FONT>
      </TD>
      <TD>
	 <CODE>
	    <B>
	       <A HREF="#toArray">toArray</A></B>()
	 </CODE>
	 <BR>
	 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
	 Returns an array containing all of the elements in this list
 in the correct order.
      </TD>
   </TR>


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      <FONT SIZE="+2"><B>Constructor Detail</B></FONT>
      </TD>
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<A NAME="HashMap()"><!-- --></A><H3>
HashMap</H3>
<PRE><B>HashMap</B>()</PRE>


<UL>
   Create a new HashMap instance.
 Inherit from Cloneable
</UL>



   </UL>


<!-- Constructor return value(s) -->

<!-- End constructor return value(s) -->

<!-- ADDITIONAL ATTRIBUTES -->

<UL>   
<B>Version: </B>2.01, 10/23/05  <BR/><BR/><B>Author:</B> Wan Changhua  <BR/>
</UL>

<HR/>
<!-- END ADDITIONAL ATTRIBUTES  -->

<!-- ========= CONSTRUCTOR DETAIL END ======== -->


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         <B>Method Detail</B></FONT>
      </TD>
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</TABLE>

<!-- One single method detail entry -->

   <A NAME="clear"><!-- --></A>
   <H3>clear</H3>
   <PRE>void <B>clear</B>()</PRE>
   
      <UL>Removes all mappings from this map.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="clone"><!-- --></A>
   <H3>clone</H3>
   <PRE><a href="HashMap.html">js.util.HashMap</a> <B>clone</B>()</PRE>
   
      <UL>Returns a shallow copy of this <tt>HashMap</tt> instance: the keys and
 values themselves are not cloned.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        a shallow copy of this map.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="containsKey"><!-- --></A>
   <H3>containsKey</H3>
   <PRE>boolean <B>containsKey</B>(key)</PRE>
   
      <UL>Returns <tt>true</tt> if this map contains a mapping for the
 specified key.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <UL>
   <B>Parameters:</B>
   
     <UL><CODE>key</CODE> -    The key whose presence in this map is to be tested  
      </UL> 
   
   </UL>
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        <tt>true</tt> if this map contains a mapping for the specified key.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="containsValue"><!-- --></A>
   <H3>containsValue</H3>
   <PRE>boolean <B>containsValue</B>(value)</PRE>
   
      <UL>Returns <tt>true</tt> if this map maps one or more keys to the
 specified value.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <UL>
   <B>Parameters:</B>
   
     <UL><CODE>value</CODE> -  value whose presence in this map is to be tested.  
      </UL> 
   
   </UL>
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        <tt>true</tt> if this map maps one or more keys to the          specified value.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="elements"><!-- --></A>
   <H3>elements</H3>
   <PRE><a href="Iterator.html">js.util.Iterator</a> <B>elements</B>()</PRE>
   
      <UL>Returns an iterator of the values in this hashmap.
 Use the Iterator methods on the returned object to fetch the elements
 sequentially.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        an iterator of the values in this hashmap.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="get"><!-- --></A>
   <H3>get</H3>
   <PRE>Object <B>get</B>(key)</PRE>
   
      <UL>Returns the value to which the specified key is mapped in this idEntry
 hash map, or <tt>null</tt> if the map contains no mapping for this key.
 A return value of <tt>null</tt> does not <i>necessarily</i> indicate
 that the map contains no mapping for the key; it is also possible that
 the map explicitly maps the key to <tt>null</tt>. The
 <tt>containsKey</tt> method may be used to distinguish these two cases.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <UL>
   <B>Parameters:</B>
   
     <UL><CODE>key</CODE> -  the key whose associated value is to be returned.  
      </UL> 
   
   </UL>
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        the value to which this map maps the specified key, or           <tt>null</tt> if the map contains no mapping for this key.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="isEmpty"><!-- --></A>
   <H3>isEmpty</H3>
   <PRE>boolean <B>isEmpty</B>()</PRE>
   
      <UL>Returns <tt>true</tt> if this map contains no key-value mappings.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        <tt>true</tt> if this map contains no key-value mappings.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="keys"><!-- --></A>
   <H3>keys</H3>
   <PRE>js.util.Iterator <B>keys</B>()</PRE>
   
      <UL>Returns an iterator of the keys in this hashmap.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        an iterator of the keys in this hashmap.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="put"><!-- --></A>
   <H3>put</H3>
   <PRE>Object <B>put</B>(key, value)</PRE>
   
      <UL>Associates the specified value with the specified key in this map.
 If the map previously contained a mapping for this key, the old
 value is replaced.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <UL>
   <B>Parameters:</B>
   
     <UL><CODE>key</CODE> -  key with which the specified value is to be associated.  
      </UL> 
   
     <UL><CODE>value</CODE> -  value to be associated with the specified key.  
      </UL> 
   
   </UL>
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        previous value associated with specified key, or <tt>null</tt> 	       if there was no mapping for key.  A <tt>null</tt> return can 	       also indicate that the HashMap previously associated 	       <tt>null</tt> with the specified key. 
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="remove"><!-- --></A>
   <H3>remove</H3>
   <PRE>Object <B>remove</B>(key)</PRE>
   
      <UL>Removes the mapping for this key from this map if present.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <UL>
   <B>Parameters:</B>
   
     <UL><CODE>key</CODE> -  key whose mapping is to be removed from the map.  
      </UL> 
   
   </UL>
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        previous value associated with specified key, or <tt>null</tt> 	       if there was no mapping for key.  A <tt>null</tt> return can 	       also indicate that the map previously associated <tt>null</tt> 	       with the specified key. 
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="size"><!-- --></A>
   <H3>size</H3>
   <PRE>int <B>size</B>()</PRE>
   
      <UL>Returns the number of key-value mappings in this map.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        the number of key-value mappings in this map.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>

   <A NAME="toArray"><!-- --></A>
   <H3>toArray</H3>
   <PRE>Array <B>toArray</B>()</PRE>
   
      <UL>Returns an array containing all of the elements in this list
 in the correct order.</UL>
   

   <!-- METHOD PARAMETERS START -->
   
   <!-- METHOD PARAMETERS END -->

   
   <UL>
   <B>Returns:</B>
        <UL>
        an array containing all of the elements in this list  	       in the correct order.   
        </UL>
   </UL>
   

   <!-- ADDITIONAL ATTRIBUTES START -->
   
   <!-- ADDITIONAL ATTRIBUTES  END -->
<HR>



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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Thu Nov 17 20:10:21 2005</div>
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